Stovepipe.



PATENTBD SEPT. 22, 1903.

I. E. HBINIG. STOVBPIPE. urmoumn rum) NOV. 6, 1902.

H0 MODEL.

UNITED STATES Patented September 22, 1903.

PATENT OFFICE.

FREDERICK EDWARD HEINIG, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO LOUISVILLE TIN AND STOVE COMPANY, OF LOUISVILLE, KENTUCKY, A

STOYEPIPE.

SPECIFICATION formingpart of Letters Patent No. 739,600, dated September 22, 1903. Application filed November 6, 1902. Serial No. 130,355. No model.)

To all whom it may oonoerni Be it known that I, FREDERICK EDWARD HEINIG, a citizen of the United States, residing at Louisville, in the county of Jeflerson and State of Kentucky, have invented new and useful Improvements in Stovepipes, of which the following is a specification.

This invention relates to stovepipes, and more especially to a blank therefor and the object. of the invention is to provide an article of this character which can be readily and inexpensively made and which is adapted to be rolled into tubular form to produce a pipe-section, and the blank has means for securing the overlapped edges of the blank in permanent rigid relation. In the present case the blank consists of a sheet of suitable material having a groove or grooves extending longitudinally of the sheet in proximity to one edge thereof, said sheet having along the other edge a flange or head to fit either of said grooves. Preferably a series of said grooves is provided in order to vary the diameter 0f the pipe-section. By placing the flange in the outermost groove I obtain the maximum size of pipe-section, and such size may be decreased by putting the flange in the adjacent groove. The grooves preferably extend short of the ends of the pipe-sections,

0 so that no material protrusions are present on said ends, either inside or outside the pipesections, by virtue of which the said sections can be readily fitted together. While the groove in connection with the flange when fitted together and flattened down constitute an effective joint, I provide in some cases additional means to prevent the opening of the pipe-sections, as will hereinafter appear, such means being only employed when the 0 hereinbefore-mentioned joint is subjected to abnormal strain.

The invention is shown in one simple embodiment thereof in the accompanying drawings, forming a part of this specification, and

in which- Figure 1 is a face view of theblank in its flattenedcondition.

0f the same in cylindrical form, showing the flange seated in the outermost groove and 5c the locking-tongues introduced into their Fig. 2 is a cross-section slots. Fig. 3 is a similar view showing the joint flattened down and the locking-tongues in their eifective positions, said sections being taken in the line 2 2, Fig. 1; and Figs.

at and 5 are like views showing the blank in the condition illustrated, respectively shown by Figs. 2 and 3, the section being taken in the line at 4:, Fig. 1.

Like characters refer to like parts throughout the several views. v

. Referring to Fig. 1, the numeral 5 indicates the improved blank, which is made from sheet metal of some suitable kind and is approximately of rectangular shape.

The outer face of the blank has at or near one edge the inwardlydisposed flange 6, which, itwill be seen, extends short of the upper and lower ends of the blank.

The grooves or channels 7 are located longitudinally of the blank 5, and each is substantialiy coextensivewith the flange 6-that is to say, they extend short of the upper and lower ends of said blank. These grooves or channels are arranged in parallelism and either of them is adapted to receive the flange. While I have shown three grooves 7, it is not my intention to limit the invention in this respect, for their number may be varied. In fact, in some cases the blank may have but a single groove; but a plurality is preferable in order that adjustment of the pipe-sections formed by said blanks is assured.

To form the blank into a pipe-section, it is rolled into cylindrical form and the flange or tongue 6 is inserted into one of the grooves 7 The stock from which the groove in which said flange is fitted and they flange itself are then flattened down by a suitable tool within the tubular structure or pipe-section, thereby securing the flange in its groove and providing a joint which cannot under ordinary cir= cumstances be opened.

The formation of the grooves 7 produces flanges on the inside of the blank, and hence the finished article, and the ends of said 5 flanges are flattened down, so that the grooves are made to terminate short of the ends of the blank, their length agreeing with that of the flange 6, whereby when a joint is formed, as

hereinbefore set forth, such flanges are not me present at the ends of the pipe-section, by reason of which they can be freely united. It will be evident that the flange 6 can be inserted into any one of the three grooves 7. W'hen it is placed in the outermost one and the joint made in the manner described, the resultant tube presents its greatest diameter, which may be decreased by placing the flange in the next groove. Adjustment of the finished article by this organization is therefore obtained. Ordinarily a joint of the character hereinbefore alluded to serves to maintain a pipe-section in its proper relation. I provide, however, in some cases locking means subordinate to said joint, which maintains the pipe-section in its proper condition when the same is subjected to unusual circumferential strain.

Upon or near that edge of the blank carrying the flange 6 and at the upper and lower ends of the same are the tongues 8 of some bendable material, the bodies of which are riveted or otherwise suitably fastened to the blank. The tongues are adapted to enter any one of a series of slots 9, formed in the blank in adjacence to the opposite ends of the grooves '7. As there are three grooves shown, naturally a like number of slots are present to provide for the moving over of the tongues. When the flanged edge of the blank is lapped over the grooved edge of the same to insert said flange into a groove, the tongues 8 are simultaneously introduced into the corresponding slots 9 and bent back to aid the jointdescribed in securing the article in tubular condition. When but a single groove 7 is formed, of course only one slot 9 is cut in each end of the blank.

scription that the improved stovepipe-blank has a series of longitudinal parallel grooves i'rfproximity to one edge and a flange along the other edge to fit into any of said grooves, the blank at each end and in proximity to the edge thereof having grooves, a plurality of slots equaling in number the grooves and spaced apart a distance agreeing with the blank having bendable tongues in a transverse line with the respective slots, by reason of which accuracy in adjusting the pipe to 1 the requisite size is assured.

. The blanks are to be furnished to dealers in their flattened condition to be shaped as 5 occasion may require for use. As they are shipped flat, a large number will occupy but a small space relatively to a similar number of finished pipe-sections.

The invention is not limited to the exact construction set forth,as many variations may be adopted within the scope of my claims.

The joint hereinbefore described may be used in combination with tubular articles of various kinds whether they be of metal, paper, or other material or circular, square, or other shape in cross-section.

Having described the invention, what I claim is' 1. A Stovepipe-blank having a series of Iongitudinal parallel grooves in proximity to one edge, a flange along the other edge to fit into any one of said grooves, a plurality of slots in the grooved portion thereof equaling in number the grooves and spaced apart a distance agreeing with that between said grooves,

and bendable tongues at the flanged edge of the blank in line with the respective slots j transversely of the blank and adapted to enter any one of the same.

2. A Stovepipe-blank having a series of longitudinal parallel grooves in proximity to one edge, a flange along the other edge to fit into any one'of said grooves, the latter extending short of the ends of the blank, a plurality of ends of the grooves and the ends of the blank respectively in proximity to the grooved edge thereof, and tongues extending outward from the flanged edge of the blank in line with the slots transversely of the blank and adapted :to enter any one of the slots. It will be obvious from the foregoing de- 'ameter of a pipe made up from said blank is made adjustable, and means constituting a permanent part of' the blank for holding the pipe in cylindrical condition when in its several adjusted positions. that between the grooves, the flanged edge of In testimony whereof I have hereunto set .my hand in presence of two subscribing wit- IIGSSQS.

FREDERICK EDWARD HEINIG.

Witnesses:

WILLIAM LEWIs HoLLIs, WILLIAM F. HARTMETZ. 

